SIL International (Formerly: Summer Institute of Linguistics / Société International de Linguistique) is an international non-governmental agency active in language research and documentation in Africa and around the world. It is based in Dallas, Texas, U.S., and has offices in many African countries.
SIL is also the RA for ISO-639-3 (codes for identifying languages).
SIL also offers Unicode fonts, some keyboard layouts, and information on aspects of multilingual computing:
Wikipedia, "SIL International," http://en.wikipedia.org/wiki/SIL_International